What Explanation Can You Give for Why the Sodium-Potassium Pump

Multiple Choice

What explanation can you give for why the sodium-potassium pump does not run out of ions to move in or out of the cell?

A) Leak channels are always open,allowing the passage of sodium ions (Na⁺) and potassium ions (K⁺) across the membrane.
B) The cell continuously produces more ions to replace those moved by the pump,maintaining a constant supply.
C) Many of the ions moved in or out then diffuse passively back through the membrane in the opposite direction.